Congratulations on the new bike!
There's a reason I rarely contribute anything but the most general thoughts on these types of threads - that's not the type of bike I imagined based on what you were looking for at all. It just goes to show how malleable the terms "tourer" and "touring" are. Or maybe how little I know about bikes!
Just as a matter of interest, what's the wheelbase of that bike?
More of an outfitting question now. Should I have it in bikepack mode (at additional cost) or get a pannier rack (steel on a Ti frame?). Bikepacking mode seems to be the usual choice.
You should have it whatever way you want. Doesn't matter much what's usual if you don't enjoy it or prefer something else.
I think you'd struggle to carry 15kg in a bikepacking setup, though, so maybe time to refine the packing list. Never having done any bikepacking I imagine the constant precision packing and unpacking could be quite an adjustment for me after using panniers so long.
There are titanium racks available too. Probably cost more than my bike though
.
Anyway, there's loads of time to have a think about it and figure out what works for you and bike.
Camping - panniers
b+b/ hostel - bike packing ime.
In fairness, not necessarily. The OP has said previously they do B&B, not camping. Posters here like
@chriswoody use a bikepacking setup and camp.
I believe there are now bikepacking panniers available.
A great advantage of panniers, especially rolltops like the ortliebs, is the ability to open up a pannier and throw a load of bread, buns, a bottle of vino and whatever else may be fancied for a picnic. I'm not so sure that a bikepacking setup would be as easy.
Another, in very hot parts of the world, is the ability to store a bottle of cold water for later in the day.